/**
 * Copyright 2010-2012 initialize4j.org
 *
 * <pre>
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 * </pre>
 */
package org.initialize4j.service.modify;

import org.initialize4j.provide.Provider;
import org.initialize4j.util.InitializationUtil;

/**
 * {@link Modifier} implementation using a {@link Provider} to change values.
 *
 * @author <a href="hillger.t@gmail.com">hillger.t</a>
 */
class ProviderModifier implements Modifier {
  private final Provider<?> provider;

  ProviderModifier(Provider<?> provider) {
    this.provider = provider;
  }

  /**
   * {@inheritDoc}
   */
  @Override
	public void change(Object bean, String fieldName) {
    try {
      Object value = provider.provide();
      InitializationUtil.setProperty(bean, fieldName, value);
    }
    catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
}
